<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified"
>

	<xsd:attributeGroup name="b-g1">
		<xsd:attribute name="b1" type="xsd:boolean"/>
		<xsd:attribute name="b2" />
		<xsd:attribute name="b3" />
	</xsd:attributeGroup>

	<xsd:complexType name="b-ct">
		<xsd:attributeGroup ref="b-g1"/>
	</xsd:complexType>

	<xsd:element name="b-e1" type="b-ct" />
	
</xsd:schema>
